Properties of the Number 68220

Sixty-Eight Thousand Two Hundred Twenty

Basics

Value: 68219 → 68220 → 68221

Parity: even

Prime: No

Previous Prime: 68219

Next Prime: 68227

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 × 379

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000101001111100

Octal: 205174

Duodecimal: 33590

Hexadecimal: 10a7c

Square: 4653968400

Square Root: 261.189586316147

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of orbits of length n under the map whose periodic points are counted by A000670. A60223

Triangle read by rows: T(n,k) is the number of normal sequences of length n whose standard factorization into Lyndon words (aperiodic necklaces) has k factors. A296372

Number of regions after generation n of Conant's dissection of a square when dissected with diagonal lines. A334630

Number of partitions of n that do not contain 6 as a part. A27340

Zeckendorf-Niven numbers (A328208) with a record gap to the next Zeckendorf-Niven number. A376028

Numerator of Hermite(n, 15/23). A159884

a(n) = (2·n³ + 5·n² + 11·n)/2. A162263

Twin primes belonging to packs of four or more twin pairs. A68220